Mill



H. P. TAYLOR.

MILL.

APPLICATION FILED IUNE 29' 19 20.

Patented May 2,1922.

2 SHEETS-SHEET I.

I w JINVENTUR monusvs H.P.TAYLOR.

MILL.

APPLICATION FILED um: 29. I920.

. Patented May 2, 1922.-

2 SHEET$SHEET 2- 7 I I INVENTDR ATTORNEYS ear-m 559mg;

HARRY IP. TAYLOR; OF LOS ANGELIJS; CALIFORNIA.

MILL.

Application fiIedJune' 29,.

ments in Mills, of which thefollowing' is a specification.

My invention relates to mills of the type wherein a drum is employed and wherein material to be reduced is confined in the drum with reducing bodies such as bars rodsrollers, balls or the like, the drum then being. rotated orotherwise agitated to cause the material to-be reduced to the desired degree of fineness. he drum is provided with a discharge end through which the material after being reduced is discharged automatically.

The invention is primarily directed to the discharge end of the mill and in the present construction I have provided means whereby the material may be freely discharged from the mill after being reduced, the size oii'the discharge opemng or openings beingad ustable and means other than the discharge opening. being provided whereby access may be had to the interior of the drum while the mill is in operation.

A mill of this type possesses many advantages and by my construction the; reducing bodies such as rods for example may be removed or replaced without necessitating stopping of the mill.

I have shown in the accompanying drawings several embodiments of my invention it being understood, of course, that the drawings are merely illustrative and not definitive.

Fig. l'being a part sectional elevation of a mill provided with my invention;

Fig, 2 is an end view of the structure of Fig. 1 looking at the discharge end;

Fig; 3 is a modification of the apparatus of Figs; 1 and 2; and

Fig. l is an end view of the mill of Fig; 3 looking at the discharge end.

Referring now to the embodiment of my invention as illustrated in Figs. 1 and 2,

1 designates a rotatable drum mounted for Specification of Letters Patent.

Patented May 2, 19221 1920. Serial No. 392,807.

rotation about afixed aX-is'on rollers Qand in a trunnion bearing 3. The trunnion bearing in the present instance is atthe teedend of the mill and the material is fed" to the mill through an open trunnion 4;;

The drum is providedat its discharge end- .5 with an annular inwardly or transversely extending. flange Gsecured tothe drum in any suitable manner. This flange may be lnchned 1f deslred', as I have indicatedin' the drawings and is provided with a continuous discharge opening .7 in its working face -that is to say, its inner side or the face adjacent the reducing compartment 8 of the drum. by which materialmay becontinuous'lydischarged from the mill through the flange.

The pposite face of the fiangeis provided with lugs 9 and discharge openings 10, the latter communicating with the continuous uninterrupted dischargeopenings 7 already referred to. It will-be seen that the open-- ings 7 and 10 in' the flange constitute a: com tinuous discharge opening in the flange whereby the material may be discharged from the drum continuously through the flange and that the lugs 9 which I' have referred to are merely for the purpose of securing that portion of thefiange at one side of the openings 7 and 10 to that portion of the flange at the other side of said openings so that the opposed walls of the openings 7 and 10. may be said to be fixed-relatively to each other. It will be apparent that when the material is being discharged fromthe mill'it will be discharged through the flangefi byway of the openings 7 and 'sure member or door 12. This door is supported, as shown in Fig; 2; ona fixed support 13 upon which it is hinged in order that it may be moved into and out ofclosing position with respect to the opening 11 The door when closed as shown in Fig. 1 ismaintained in such position by any suitable lock"- ing means such as 14 (see Fig. 2 The door is mounted for rotation in a bearing 15 so as to be freely'movable with the drum 1 when the mill is in operation. The end of the drum Opposite to the discharge'end is provided with a gear 16 vinmesh with a small gear 17, thelatter being driven through anysuitable gear train or otherwise by a motor 18. The drive for 'this'mill is merely illustrative. and not definitive as obviously the drum may be rotated in any desired manner.

' Mounted on the'fiange 6 adjacent the dis charge openings 10 are plates or slides P, these plates being adjustable to vary the size of the openings 10. to. thereby vary the sizeof the material discharged from the mill as well as to raise or lower the pulp line in the mill. This regulation or adjustment of the discharge openings 1s entirely independent of the door or closure member 12.

It will be seen from the foregoing that I have provided in this embodiment of my invention a mill wherein the material to be reduced is introduced into the reducing compartment 8 of the drum 1 and is there reduced tothe desired degree of fineness by rotating the drum together with the material to be reduced and any of the well-known tioned above.

, therefrom through the. flange'fi by way of the discharge opening comprising the openings 7 and 10, it being understood thatin normal operation the door 12 is closed as shown in-Fig. 1'so that no material is discharged from the mill except through the openings 7 and 10. Should it be desired to '-;observe the interiorof the mill while the to swing the door 12 out of closing sameis in operation it is merely necessary position with respect to the opening 11 and if desired the reducing bodies may be'removed or re placed without necessitating shutting down of the mill.

It will be apparent therefore that in this embodiment of my inventionI have provided an inwardly-extending flange at the discharge end ofthe drum 1 which flange is provided at its face adjacent the crushing compartment 8 with a continuous discharge slot 7 communicating with the slots 10 at the opposite side of the flange wherebymaa terial is free to be'discharged automatically from the drum through the flange as the same is rotated. It will be apparent also that by adjusting the plates]. the pulp line may be raised or lowered and the size of the material discharged from-the mill regulated.

In the embodiment of my invention illus trated. in Figs. 3 and 4: I provide a'drum 19 mounted at one end on roller bearings 20, the opposite end of the drum being mount- .ed in thetrunnion bearing 21 for example,

this end of the drum being provided with a door 32 similar to the door adapted to'be secured to the drum the inner faceof the in sections as desired and extending. in-

wardly so as to form an inwardly extending -flange similar to the flange 6 of Fig. 1. This liner is provided atitsface adjacent the crushing compartment 2? of the mill with acontinuous discharge opening 28'by which .material is discharged through the liner,

this opening communicating with a discharge opening 29 adjacent the opposite face ofthe liner. The opening 29 is interrupted at intervals by projections 30 on the liner. The liner proper defines the boundaries ofa central opening 31 in the discharge end of the mill which opening is provided with a 12 of Fig. l. A ring 33 having a peripheral flange 34 is 19 in any suitable manner as by bolt-s 35. This ring at intervals is cut out to form notches 36 which are adapted to cooperate with the projections 80 of the liner 26 so that relative rotation of the liner to the ring is effectually prevented. As a means of securing the liner 26 in place Ihave shown bolts 37 passing through the ring 33 and the liner; This construction therefore provides for discharge of material from the drum automatically through openings provided in the liner 26,- these openings being those above referred to and designated 28 and 29.

It will also be seenthat the central open ing 31 defined by the liner 26 which is normally maintained closed b-ythe door 32 af fords means for observing the interior of the mill for the purpose of inspecting the re ducing bodies therein or for any other pure pose without necessitating closing down of themill. In this instance I have provided plates P similar to the plates P of Fig. l for the purpose of varying the size of the discharge openings and regulating the pulp line as desired. I I

In each of the constructions illustrated I have shown, for convenience only, the inner beingunderstood, of course, that if desired flange may be straight up and down.

' It will be seen from the foregoing description that by providing the inclined flange or the door with an inclined face'at' the discharge opening of the mill and by making the discharge openingeither in the flange or the door, as the case may be, continuous, on, the side adjacent the crushing compartment of the mill danger of the reducing. bodies, such as rods. clogging the discharge openin is eliminated inasmuch as the tendency'oi naiapoa the inclined faces mentioned.

It will be seen from the foregoing that I have provided a mill comprising a drum having an annular flange at the discharge end thereof, said flange extending transversely of the drum and being provided with a continuous unobstructed opening in the working face thereof, that is to say, in the face adjacent the reducing compartment of the drum whereby material may be continuously' discharged from the mill through said flange. In fact lugs 9which as I have it will be seen that when the mill is in operation there is no interruption in the discharge of the material from the mill inasmuch as the material is at all times free to flow or be discharged from the mill through the flange uninterruptedly and continuously through the openings 7 and 10, the material being divided as it is discharged through the outer face of the flange by the hereinbefore pointed out, are merely provided for the purpose of securing the two parts of the flange together whereas the flange otherwise would be divided into two pieces.

What I claim as new is:

1. In a mill of the character described, a drum having an annular flange at one end thereof defining the boundaries of a central opening, said flange extending transversely of the drum and being provided with a continuous uninterrupted opening in the working face thereof whereby material is continuously discharged from the mill through the flange.

2. In a mill of the character described, a drum having a discharge end, and an annular flange at said discharge end, the face of said flange adjacent the interior of the mill being provided with a continuous opening,

said flange being provided with a series of openings in its opposite face communicating with said continuous opening, said openings constituting discharge opemngs for the mill whereby material is discharged from the mill through said flange.

3. In a mill of the character described, the

combination of a drum, a member atone end thereof defining the boundaries of a central opening at the discharge end of the mill, means for closing said opening when the mill is in operation, the said member at the discharge end of the mill being provided with a continuous uninterrupted opening in the interior face thereof whereby material is discharged from the mill through said member. I

at. In a mill of the character described,the combination of a drum having a discharge end, an inwardly-extending member at said discharge end defining the boundaries of a central opening in the discharge end of the mill, a closure member for said opening,

said liner is movable relatively to' said drum said inwardly-extending member having discharge openings'therein, and means for varying'the size of: said discharge openings.

5. Ina mill of the character described, a drum having a discharge end, a member at said discharge end defining the boundaries of a: central opening in the discharge end of the mill, a" closure for said opening, the face of said member-adj acent the interior of the drum being provided with a continuous opening communicating with openings inthe opposite face of said member, said openings constitutingdischarge openings for the mill.

6; In a mill of the character described, a drum having adischarge end, a member at said discharge end defining the boundaries of an opening at the discharge end of the mill, said member being provided with an opening constituting a discharge opening for the mill, and a-rotat'able plug constituting a closure for the opening first-named, said plug being movable away from said opening to permit access to the interior of the drum while material is being discharged through said discharge opening.

7 In a mill of the character described, a drum having a discharge end, and an inclined inwardlyextending flange rigid with said drum and provided with an opening for permitting the discharge of material from the drum through said flange.

8. In a mill of the character described a drum havinga discharge end, end liners at said discharge end of the mill provided with a continuous discharge opening ontheir inner faces and a series of openings in the opposite face, said openings jointly constituting discharge openings for the mill, and a ring secured to said liners and to said drum.

9. In a mill of the character described, a drum having a discharge end, a liner at said discharge end provided with an offset portion having an opening to the exterior of the mill, an opening on the opposite face of said liner and communicating with the first-mentioned opening so that discharge openings for the mill are provided, and a ring secured to said drum and having a notch engaging said oflset portion of the liner.

10. In a mill of the character described, a drum having a discharge end, a liner at said discharge end provided with a central opening, said liner being provided with an offset portion having an opening communicating With the interior of the mill, a ring to which secured and having a notch engaging said offset portion of the liner to prevent relative rotation of said liner and ring, said ring being secured to the drum, and a movable closure member for the central opening in the liner, permitting access to be had to the interior of the mill while material is being discharged through the disous opening for the discharge of material therethrough.

12. In a mill of the character described, a drum having an annular flange at one end thereof, said flange extending transversely of the drum and being provided With an adjustable continuous discharge opening therein. I I

'13. In a mill of the character described, the combination of a drum, a flange at one end thereof defining an opening at the end of the drum, a closure for said opening supported independently of the drum, said flange being provided With an opening for effecting a discharge of material from the drum through said flange, and a connection Wholly exterior of the Working face of said the discharge opening to each other.

14.In a mill of the characterudescribed, the combination of a drum, a transversely extending flange at one end of the drum defining the boundaries of an opening at the end of the drum, and aclosure for said opening supported independently of the drum. said flange being provided with a discharge opening for effecting a discharge of material through the flange. I v

15. In a mill of the character described, a drum and a member at the discharge end thereoi provided With a discharge slot ex tending uninterruptedly for a complete turn about the axis of rotation of the drum.

This specification signed this 18th day of June, 1920.

HARRY P. TAYLOR.

flange for connecting the opposed walls of" 

